An adapter to connect a Canon EOS M series camera to a telescope with a 2" focuser. I use it with my Orion Skyquest XT8 to photograph the Moon and terrestrial targets. This telescope doesn't have enough inward focus travel to accept a T-ring adapter for use with a DSLR, but EF-M has a short enough flange focal distance that it can work with it, given a low-profile adapter such as this one!
I increased the support overhang angle to 50 degrees in Cura to prevent it from building unnecessary supports around the outside of the telescope shaft. It created only small, easily removed supports under the bayonet fins. These may not even be necessary at all.